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Forums >> Revit Building >> Technical Support >> Hip Roof Over Bay

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Fri, Apr 26, 2013 at 2:05:47 AM | Hip Roof Over Bay

#1

sirrox


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I am trying to create a 3 sided hip roof over a 3 sided bayed room. The two 45 degree side walls are not equal to the front bay wall in length.

I tried making it as one footprint but that doesn't work as the three slopes dont meet at a horizontal ridge.

I tried making a seperate roof but cannot get the slopes to meet a central spot with the horizontal ridge. See "Not Working" image.

I have attached an image of what I am trying to do. Image is from an old 2007 post I found, but it didn't explain how they did it. I'm new at this so a newbie step by step would be required. Ie. Roof by footprint. Sketch lines or pick walls. Define slope or Slope arrow? Align eaves? etc.

I am using Revit 2013.

Thanks!



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119094_Image-0012.png119094_Not_Working.png

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Fri, Apr 26, 2013 at 8:11:03 AM | Hip Roof Over Bay

#2

WWHub


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From your post, I'm not sure what you want or what is wrong.  

 

Remember, each edge can define a different slope.


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Fri, Apr 26, 2013 at 8:57:11 AM | Hip Roof Over Bay

#3

sirrox


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Thanks WWHub. Sorry I'l try to explain better.

The attached image shows how the three sides of the bay roof don't meet at the some location at the ridge. Also as the main roof is 5/12 and I have the bay roof drawn at 9/12 the fascia where the main roof and the bay roof meet looks wrong. It appears the fascia of the bay roof is at a lower elevation.

I've shown how the footprint for the roof has been done as well. 9/12 slope on all sides of the bay and the perpendicular return to create the roof ridge back to the main roof.

Roof along bay has been drawn with pick walls and 2' overhang. The perpendicular side to the bay roof (that create the ridge back to the main roof) were down with just sketched.

I also cannot use join roof with these two roofs. I get "Roof cannot be joined".

As you can see what I ended up with vs what I want (previous post) are very different.



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119118_Roof_3.png

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Fri, Apr 26, 2013 at 9:17:42 AM | Hip Roof Over Bay

#4

WWHub


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You still don't say what you want - just what you did.  Perhaps you don't know?

"... the fascia where the main roof and the bay roof meet looks wrong..."  why?  What do you think should happen?

"...It appears the fascia of the bay roof is at a lower elevation...."  Then move it up if it needs to be.

 

You tell us what pitches you used but what do you want?  Revit shows you what it does with those pitches. If that's not right then maybe those are wrong.   Try something different. << Pitches can be defined by formula - distance/height.

 

In your original post you said "....I have attached an image of what I am trying to do...." <<< Which one? Left or right?  We have to guess.  I am assuming the left one but you should always be more explicit.

 

 



Edited on: Fri, Apr 26, 2013 at 9:19:03 AM

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Fri, Apr 26, 2013 at 9:41:22 AM | Hip Roof Over Bay

#5

sirrox


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Heree is the same roof with 5/12 to match the main house roof.

It looks much better at the fascia, but the 3 slopes don't join at a central spot. Also the roof will not join to the main still.

I have drawn red lines where I feel the side bay slopes should be. I..e the valley between the main roof the bay roof should be an intersection of the main roof and the perpendicular portion of the bay roof. Instead I have a valley between main & perpendicular as well as main and 45 bay roof. So two different vallleys. Look at the image I attached in my original post (blue roof, grey walls). It has one valley on each side.



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119122_Roof_4.png

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Fri, Apr 26, 2013 at 9:49:09 AM | Hip Roof Over Bay

#6

WWHub


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With what you want - not all of the 3 sides of that bay will be the same. Change the slope on the two sides to meet the point!

 

As far as joining goes, after you get the bay roof right, add some reference planes in plan where the two roofs meet and revise the main roof sketch to cut the roof out along those planes.


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